40 results about "Hyperboloid structure" patented technology

An electrical connector for high current applications has a mating plug and socket assembly. The socket assembly has two sockets arranged coaxially of one another and electrically interconnected. The central socket receives and contacts a pin on the plug assembly; the other socket contacts the external surface of a tubular sleeve surrounding and integrally electrically connected with the pin. The socket assembly also has a third socket electrically insulated from and arranged coaxially outwardly of the other two sockets. The third socket makes electrical contact with the outer surface of a tubular contact extending coaxially of the pin and electrically insulated from it. The sockets each have a hyperboloid configuration of multiple resilient wires to make contact with the pin, sleeve and outer contact.

The invention provides an installation construction method for a curtain wall with a hyperbolic metal veneer. The method includes the steps of conducting measuring and paying off while setting up a three-dimensional model diagram, determining the size of unit plates, manufacturing and installing a special-shaped bearing truss, conducting overall adjustment on a transverse horizontal keel while installing the transverse horizontal keel, installing and positioning the metal hyperbolic veneer, then, installing a metal veneer, adjusting the veneers, and finally conducting quality acceptance. The key technologies such as the technology of manufacturing of the special-shaped bearing truss and the technology of overall adjustment of the transverse horizontal keel are adopted, construction is accurately, safely and effectively completed, the cost performance is good, the curtain wall is easy to maintain and long in service life, and the method is mainly suitable for construction of the curtain wall with the metal hyperbolic veneer and particularly suitable for installation construction of the engineering veneer of the hyperboloid structure.

This invention relates to a kind of overall view vision system based on hyperboloid mirrorscope, overall view mirrorscope and overall view connector compose overall view finder module, the zoom lens connector and the zoom lens compose the zoom lens module, the upper part of the glass protecting cover is blocked in the flute of the overall view finder connector, the down part is blocked in the flute zoom lens connector, to make both the overall view mirrorscope and the zoom lens are put in the glass protecting cover, the finder telecamera links with the zoom lens connector. The centre of overall view mirrorscope , zoom lens and telecamera sensor are in the same straight line , it has ascertained optical imaging focal point of the overall view system; the said overall view mirrorscope is hyperboloid structure , the reflection focal which the hyperboloid point corresponded and the optical imaging focal point of the overall view system coincide. The overall view mirrorscope in the invention adopts the hyperboloid structure, it can satisfy the range demand of wide angles finder of the system, the module combination method is easy to assemble and change, has improved the reliability of the system.

An electrical connector for high current applications has a mating plug and socket assembly. The socket assembly has two sockets arranged coaxially of one another and electrically interconnected. The central socket receives and contacts a pin on the plug assembly; the other socket contacts the external surface of a tubular sleeve surrounding and integrally electrically connected with the pin. The socket assembly also has a third socket electrically insulated from and arranged coaxially outwardly of the other two sockets. The third socket makes electrical contact with the outer surface of a tubular contact extending coaxially of the pin and electrically insulated from it. The sockets each have a hyperboloid configuration of multiple resilient wires to make contact with the pin, sleeve and outer contact.

The invention discloses a nucleic acid extraction device capable of preventing cross-contamination. The device comprises a motor, a motor control circuit, a stirring sleeve frame which is driven by the motor, stirring sleeves which are arranged on the stirring sleeve frame, and sampling boards, wherein guide grooves are formed on the stirring sleeve frame; each stirring sleeve is provided with a connecting part, and stirring sleeve feet which are formed by extending from the connecting part; the bottom of each stirring sleeve foot has a rotary double-leaf double-curved-surface structure; each stirring sleeve is in clamping fit with the guide grooves of the stirring sleeve frame through curve-shaped guide rails which are arranged on two sides of the connecting part; and the motor control circuit controls the motion of the motor according to input parameters of sample information and further controls the motion track of the stirring sleeves in deep holes of the sampling boards. The nucleic acid extraction device effectively prevents the cross-contamination caused by the mutual influence of aerosol and liquid droplets among samples in the automatic nucleic acid extraction process, and ensures that nucleic acid extraction results are accurate and reliable.

The invention relates to a cage type leaf spring, a jack using the same and an electric connector. The cage type leaf spring is composed of a front end ring, a back end ring and a connecting linear spring bar integrally arranged between the front end ring and the back end ring; the positioning columns of corresponding torsion fixtures can be inserted into the inner holes of the front end ring and the back end ring in a matched manner along an anterior-posterior direction; the front end ring and the back end ring are provided with rotation stopping keyways; and the rotation stopping keyways are in rotation stopping plugging matching with rotation stopping keys on the corresponding torsion fixtures, and therefore, under the action of the torsion fixtures, the connecting linear spring bar can form a hyperboloid structure which defects together with the axes of the front end ring and the back end ring, the extension direction of the hyperboloid structure intersecting with the axis space of the front end ring and the back end ring. With the cage type leaf spring adopted, the problem of complex operation of molding a connecting linear spring bar into a hyperboloid structure in the prior art can be solved.

The invention discloses a novel flash iron smelting method and an iron smelting furnace thereof. The iron smelting furnace comprises a reaction tower, a furnace charge nozzle and a molten pool, a reaction space is defined in the reaction tower, and the furnace charge nozzle is formed in the top of the reaction tower; the molten pool is arranged at the lower part of the reaction tower, and a towerbody of the reaction tower is of a single-sheet hyperboloid structure generated through a hyperbolic curve rotating around a main axis of the reaction tower; and the lower part of the single-sheet hyperboloid structure is provided with an inlet of fuel and oxygen-enriched gas, the fuel and the oxygen-enriched gas enter the lower part of the reaction space from the inlet, and high-valence iron oxides in iron ore are partially reduced to low-valence iron oxides and a part of metal iron, and the low-valence iron oxides and the part of metal iron fall into the molten pool. The iron smelting furnace has the advantages of compact structure and controllable reaction time and reaction temperature.

The invention relates to a method for manufacturing a mobile phone lens, in particular to a method for manufacturing the double-curved-surface lens. The method comprises the steps that a sheet is selected, UV transfer printing is carried out on the selected sheet, electroplating treatment is carried out on a transfer printing face, according to needs, different colors are electroplated, printing is carried out on an electroplating face, and the electroplating colors are set out; after printing, drying treatment is carried out, a protection film is laid up, a locating hole is punched, the whole sheet is punched singly, heat molding is carried out on the single sheet, and therefore the two side edges of the whole sheet are in a curved-surface state; and the molded sheet is put into a mold for injection molding. According to the method, the problems that after UV transfer printing, thermal deformation of a plane PC sheet is poor, and in the prior art, after the sheet is directly molded into the curved-surface lens via injection molding, UV transfer printing cannot be carried out, and poor printing is caused are effectively solved; and a double-curved-surface structure is attractive in appearance, and the double-curved-surface lens is a pioneer in a model machine.

The invention relates to conical structures on substrate surfaces, in particular optical elements, to methods for the production thereof and to the use thereof, in particular in optical devices, solar cells and sensors. The conical nanostructures according to the invention are suitable in particular for providing substrate surfaces having very low light reflection. The method according to the invention for producing conical nanostructures on substrate surfaces comprises at least the steps of: a) providing a substrate surface covered with nanoparticles; b) etching the substrate surface covered with nanoparticles to a depth of at least 100 nm, wherein the nanoparticles act as an etching mask and the etching parameters are set in such a way that hyperboloid structures are produced underneath the nanoparticles; c) breaking the hyperboloid structures in the region of the smallest diameter by exerting mechanical forces, wherein the structures remaining on the substrate surface have a conical shape which corresponds substantially to half a single-shell hyperboloid.

The invention discloses a full-automatic spin lock for a container. The full-automatic spin lock comprises a lock shaft, a lock base, a torsional spring, a lock nut, a connecting pin, a limit pin, an emergency release pin, a round pin, a gasket, a spring and an end cover. The lock head of the lock shaft has an inclined double curved surface structure, wherein a lock rod of the lock shaft passes through the lock base and the torsional spring, the lower end of the lock rod is fixed by the lock nut and the connecting pin is adopted for preventing the lock nut from loosening. The torsional spring is sleeved on the lock rod and positioned in a cavity in the middle of the lock base; and the torsional spring is formed by integrally vulcanizing an inner ring and an outer ring by a rubber layer. The emergency release pin is positioned in a groove on the side face of the lock base, and the tail end of the emergency release pin is inserted into the outer ring of the torsional spring. The full-automatic spin lock for the container can realize automatic locking and automatic unlocking of the container, is provided with a manual unlocking device under the abnormal conditions, is also provided with an indicator so as to facilitate observing the locking state of the spin lock, and improves the loading and unloading efficiency and the transportation safety of the container.

The invention discloses a device for storing optical lenses, which comprises a fixing pin hole arranged in the middle of the storage frame, and is characterized in that a through hole is arranged in the middle of the storage frame, a single-leaf hyperboloid is used in the storage frame, and a fixing pin hole is arranged in the middle of the storage frame. The fixed frame is fixed through the fixing pin hole, and the optical lens is placed in the through hole of the storage frame through the fixed frame. The storage rack set on the single-leaf hyperboloid forms a cylindrical structure with large ends and a small middle, and a through hole is opened in the middle, and a fixed frame is installed in the middle of the through hole. When the optical lens is stored on the fixed frame, the optical lens The edge is in contact with the inner wall of the storage frame, and the position movement of the optical lens is restricted by the suction cup set on the fixed frame, and the storage frame with a single-leaf hyperboloid structure can be carried around, and the optical lens can be fixed on the fixed frame when needed , and insert the fixing pin through the fixing pin hole to fix the position of the fixing frame and avoid its shaking.

The invention proposes a floating-drum type multi-head aerating mixer comprising a floating drum, a motor, a gear train, impeller shafts and stirring impellers; the floating drum is provided with a motor bracket, the motor is arranged on the motor bracket; the gear train comprises an inner gear, a drive center wheel and a plurality of planetary driven wheels; the planetary driven wheels engage with the inside inner gear and with outside drive center wheel so as to revolve and rotate; the drive center wheel has more teeth than the planetary driven wheel; the center of each of planetary driven wheels is transmissibly connected with a mounting shaft; the plurality of mounting shafts are respectively corresponding to a plurality of impeller shafts and are connected with the plurality of impeller shafts via couplers; bottom of impeller shaft is provided with a stirring impeller having a double curved surface structure; the stirring impeller is provided with a stirring blade at upper surface and an aerating blade at lower surface, and has a length equivalent to the length of generatrix of the stirring impeller. The floating-drum type multi-head aerating mixer has various stirring styles, a plurality of stirring impellers and better stirring effects, thereby improving aeration effects.

The invention relates to a bypass valve with a hyperboloid structure. The bypass valve comprises a T-shaped pin, a hyperboloid rocker and a hook-faced valve plate, and the hyperboloid rocker and the hook-faced valve are integrally connected through the T-shaped pin. The T-shaped pin is composed of a spherical pin head on the upper portion and a cylindrical rod on the lower portion. A hook face and a spherical face are respectively arranged on the hyperboloid rocker. A hook face and a plane structure are respectively arranged on the valve plate, and the spherical face of the valve plate and the spherical face of the hyperboloid rocker form a spherical-face motion pair. The bypass valve is simple, compact and reasonable in structure; acting force in the process of running is reasonably optimized, so that motion abrasion among parts can be reduced; contact area in the rotation is enlarged, so that severe abrasion caused by single-point contact is avoided; impacting force is effectively distributed, so that shearing abrasion during turning on and off is reduced; the contact area of rotary motion is enlarged, so that structural strength and abrasion resistance are enhanced, and service life is prolonged.

The invention provides an infrared / visible dual-waveband photoelectric self-aligning system, which comprises a light source, a beam splitter, a secondary lens, a protection window, a main lens and a reading imaging device, wherein the beam splitter is positioned on the radiation light path of the light source; the secondary lens is positioned on the reflecting light path of the beam splitter; the protection window is used for fixing the secondary lens; the main lens is positioned on the reflecting light path of the secondary lens; the main lens is used for reflecting parallel beams; the reading imaging device is arranged on the transmitting light path of the beam splitter; the reflecting surface of the main lens is a paraboloid; the secondary lens has a hyperboloid structure. By adopting the infrared / visible dual-waveband photoelectric self-aligning system, the requirement of visible and infrared parallel light source testing can be met. The infrared / visible dual-waveband photoelectric self-aligning system can be used as an infrared / visible parallel light tube as well as an infrared / visible light self-aligning system.

The invention discloses a lens, a light source module and a lighting device. The lens includes a bottom surface, an inner surface, an outer surface, and a first accommodating cavity for accommodating light-emitting components, wherein the inner surface includes a first light incident surface and two oppositely arranged second light incident surfaces, and the first light incident surface The light surface is a curved surface or a plane, the bottom surface is adjacent to the second light incident surface, and the outer surface includes two first reflection surfaces forming a V-shaped structure, the first light exit surface on both sides of the first reflection surface, and the The second light-emitting surface adjacent to the first light-emitting surface, the light incident on the first light-incident surface is refracted and then collimated, and the second light-incident surface and the second light-emitting surface form a hyperboloid structure. The lens uses collimation plus total reflection structure and hyperboloid structure to superimpose the outgoing light to achieve a larger angle distribution of outgoing light and meet the requirements of high uniformity. At the same time, it can achieve more The uniform irradiation area of ​​the large-volume lamps reduces the cost.

The invention discloses a wear-resistant ball and relates to the field of valves. The wear-resistant ball comprises a spherical body provided with an inner hole, wherein notches are formed in the two ends of the inner hole, the contour lines of the notches are W-shaped, and the notches adopt smooth transition double curved surface structures. The wear-resistant ball provided by the invention has the advantages of long service life and abrasion resistance.

The invention discloses an impeller for a stirrer. The impeller is a hyperboloid impeller body; a shaft hole connected with a rotating shaft of the stirrer is formed in the middle of the hyperboloid impeller body; the hyperboloid impeller body is provided with a plurality of arc-shaped aeration channels from top to bottom; and the arc-shaped aeration channels comprise front aeration channels and rear aeration channels, the front aeration channels are inner channels in the hyperboloid impeller body, the rear aeration channels are grooves formed in the surface of the hyperboloid impeller body, and hollow stirring blades cover the grooves. The impeller has the advantages that liquid can do tangential motion along the circumferential direction of the impeller through transition of the hyperboloid structure under the action of gravitational acceleration, circulating water flow is formed from top to bottom under the reflection effect of the tank wall, meanwhile, natural air suction type aeration is conducted through the arc-shaped aeration channels from top to bottom, aeration equipment does not need to be additionally arranged, the stirring aeration effect is improved, and meanwhile thecost is relatively reduced.

The invention discloses a high gain and high efficiency planar antenna. The high gain and high efficiency planar antenna comprises a feed layer, a coupling layer, a resonant cavity layer and a radiation layer, wherein the feed layer, the coupling layer, the resonant cavity layer and the radiation layer are sequentially arranged according to the electromagnetic wave propagation direction. The radiation layer comprises a plurality of radiation units and special-shaped radiators, wherein the special-shaped radiators are in a novel structure. Electromagnetic waves are radiated towards space by the special-shaped radiators, each special-shaped radiator is formed by a double-curved-surface cut conical barrel, and therefore the electromagnetic waves can be radiated out along the double-curved-surface structure portions of the special-shaped radiators in a uniform amplitude and inphase mode, and the double-curved-surface structure portions of the special-shaped radiators can weaken mutual electromagnetic interference of adjacent special-shaped radiators. The high gain and high efficiency planar antenna breaks thinking patterns of an existing planar antenna design structure, the planet planar antenna unique in structure is designed through a great deal of experimental simulation, and therefore the whole planar antenna is compact in structure, low in section and high in gain, and meets existing planet planar antenna technical demands, namely high efficiency, large band width and small size, and efficiency of the planar antenna can be improved by more than 85%.

A rotating anode is mounted on a shaft of an X-ray tube by means of a ring. The ring allows expansion and reduces the hyperstatic state of the assembly. The ring has the shape of a diabolo, preferably that of a hyperboloid structure generated by revolution. The ring dampens vibration phenomena in a shaft bearing the rotating anode and reduces noise-creating phenomena.

The invention discloses an axial swirl vane for a rotational flow combustor and an arrangement thereof. The axial swirl vane comprise a sleeve and swirl vanes, the swirl vanes are uniformly distributed on the sleeve along the radial section, the swirl vanes are of a hyperboloid structure, and the swirl vanes are overlapped with each other. The external combustion-supporting agent or the fuel gas forms a backflow region after passing through a swirler, a reflux area is formed near the spray-out end of the combustor, and it is ensured that the fuel and the air can be fully mixed, the height of the combustion flame is stable and the ignition is fast and timely. Meanwhile, a large amount of surrounding flue gas is sucked by the backflow region, so that the mixed gas can be diluted to a relatively low oxygen content before being combusted, and the generation amount of nitric oxide is reduced.

An embodiment of the present invention provides a hyperboloid high-current spiral contact, which includes a sleeve and an inner sleeve connected to the inside of the sleeve. The inner sleeve includes connecting ends at both ends and a plurality of connecting ends connected between the two connecting ends. The shrapnel, the shrapnel are arranged obliquely and parallel along the casing direction, and the shrapnel is arc-shaped after being twisted along the width direction of the shrapnel, forming a hyperboloid structure. The present invention increases the contact area by providing a hyperboloid high-current spiral contact piece, thereby improving the current-carrying capacity and reliability of the contact piece, reducing the scrap rate of the contact piece, and having a simple structure, which is beneficial to mass production and reduces production costs. cost.

The invention relates to a cage type leaf spring, a jack using the same and an electric connector. The cage type leaf spring is composed of a front end ring, a back end ring and a connecting linear spring bar integrally arranged between the front end ring and the back end ring; the positioning columns of corresponding torsion fixtures can be inserted into the inner holes of the front end ring and the back end ring in a matched manner along an anterior-posterior direction; the front end ring and the back end ring are provided with rotation stopping keyways; and the rotation stopping keyways are in rotation stopping plugging matching with rotation stopping keys on the corresponding torsion fixtures, and therefore, under the action of the torsion fixtures, the connecting linear spring bar can form a hyperboloid structure which defects together with the axes of the front end ring and the back end ring, the extension direction of the hyperboloid structure intersecting with the axis space of the front end ring and the back end ring. With the cage type leaf spring adopted, the problem of complex operation of molding a connecting linear spring bar into a hyperboloid structure in the prior art can be solved.

The invention discloses a large-scale double-curve-surface structure manufacturing multipurpose tooling, which comprises main structure plates, wherein each main structure plate comprises a left side main structure plate, a middle main structure plate and a right side main structure plate in parallel arrangement, the left side main structure plate and the right side main structure plate are respectively welded with the middle main structure plate through a plurality of transverse bars, vertical bars and inclined bars, a bottom plane is processed in the bottom of each main structure plate, the upper end of each main structure plate is in an arc shape, one side is provided with a vertical end plane, the vertical end plane and the bottom plate are mutually vertical, the two sides of the upper end arc-shaped surface of each main structure plate are respectively provided with a semicircular notch, a plurality of weight reducing holes are respectively distributed in each main structure plate, and a middle plane curving line is curved on other outline surfaces of each main structure plate except for the bottom plane. The large-scale double-curve-surface structure manufacturing multipurpose tooling has the advantages that the manufacturing precision of the domestic first large-scale magnetic confinement nuclear fusion vacuum chamber double-curve surface structure can be improved, the cost is reduced, and the workload is reduced.

The invention relates to a pole climbing system of a pole climbing collaborative robot of a power system and a pole climbing method of the pole climbing system. The pole climbing system comprises an auxiliary device located at one side of an electric pole and an active device located at the other side of the electric pole; the auxiliary device includes a pair of auxiliary rollers arranged in a vertical direction; the roller surface of each auxiliary roller is of a uniparted hyperboloid structure; a U-shaped roller seat is arranged outside the auxiliary rollers; the active device includes an active wheel; a circular groove matched with the side wall of the electric pole is formed in the wheel face of the active wheel; self-locking guide rails are arranged between a connecting plate and a bottom plate; and each self-locking guide rail includes an iron pipe, an iron pole matched with the inner cavity of the iron pipe, and an electromagnet fixedly arranged at the head end of the iron pipe.The pole climbing system of the pole climbing collaborative robot of the power system is high in stability, not liable to laterally shift and high in safety in a pole climbing course.

The invention discloses a manufacturing method of a door or window frame angle curved surface structure. In order to solve the problem of high machining difficulty or high cost of a conventional door or window frame angle, the manufacturing method of the door or window frame angle curved surface structure comprises the following steps of: a. positioning by taking the central axis of a circular rod or a circular tube as the center of rotation, and machining the circular rod or the circular tube into an annular trumpet-shaped hyperboloid part; b. cutting the annular trumpet-shaped hyperboloid part into four equal door or window frame angles along the radial direction; and c. welding the cut door or window frame angles in corners of a door or window frame. According to the manufacturing method, the manufacturing difficulty and cost of hyperboloid structures can be significantly reduced.

The invention discloses a nucleic acid extraction device capable of preventing cross-contamination. The device comprises a motor, a motor control circuit, a stirring sleeve frame which is driven by the motor, stirring sleeves which are arranged on the stirring sleeve frame, and sampling boards, wherein guide grooves are formed on the stirring sleeve frame; each stirring sleeve is provided with a connecting part, and stirring sleeve feet which are formed by extending from the connecting part; the bottom of each stirring sleeve foot has a rotary double-leaf double-curved-surface structure; each stirring sleeve is in clamping fit with the guide grooves of the stirring sleeve frame through curve-shaped guide rails which are arranged on two sides of the connecting part; and the motor control circuit controls the motion of the motor according to input parameters of sample information and further controls the motion track of the stirring sleeves in deep holes of the sampling boards. The nucleic acid extraction device effectively prevents the cross-contamination caused by the mutual influence of aerosol and liquid droplets among samples in the automatic nucleic acid extraction process, and ensures that nucleic acid extraction results are accurate and reliable.

The invention provides a sunshade curtain, comprising: a cord, the cord includes: a first cord, a middle cord and a second cord; a jacking tube, the jacking tube includes: a first section, a middle section and a second section connected in sequence, the first section , The middle section and the second section are not collinear, the top of the first curtain is installed on the first section, the top of the middle curtain is installed on the middle section, and the top of the second curtain is installed on the second section; the first guide rods are respectively installed at both ends of the jacking pipe and the second guide rod; it can slide along the first guide rod and the second guide rod, and is used for installing the first curtain, the middle curtain and the tie rod at the bottom of the second curtain. This scheme realizes the arc structure of the jacking pipe through the non-collinear design of the three sections of the jacking pipe, and then cooperates with the three curtains designed as the arc skeleton of the jacking pipe to realize the hyperboloid structure of the sunshade curtain. Matching the inclination angle of the front window glass, so as to adapt to the streamlined shape of the hood of the EMU, the invention also provides a rail vehicle using the above-mentioned sunshade curtain.

The invention discloses a combined-type curved surface line light condensation device, which is composed of a plurality of sequentially arranged light condensation units, wherein the lower parts at two sides of each light condensation unit gradually incline towards the center thereof along the axial direction, the upper end face of the light condensation unit is a circular-arc-shaped light condensation refracting surface, the lower end face of the light condensation unit is a flat surface, the inclined surfaces at two sides of each light condensation unit are of a double curved surface structure which protrudes towards the center and is symmetrically arranged, the outer side of the double curved surface structure is plated with a reflecting material so as to form a reflecting surface, and light refracted by the light condensation refracting surface or light which is firstly refracted by the light condensation refracting surface and then reflected by reflecting surface of the double curved surface structure totally shoots to an area corresponding to the lower end face of the light condensation unit. According to the invention, the two side surfaces of each light condensation unit are designed to be the biconvex structure with a reflecting function, so that all incident light passing through the light condensation refracting surface can be ensured to shot into the area corresponding to the lower end face of the light condensation unit under the condition of reducing the overall thickness of the light condensation unit.

The invention discloses a novel flash iron smelting method and an iron smelting furnace thereof. The iron smelting furnace comprises a reaction tower, a furnace charge nozzle and a molten pool, a reaction space is defined in the reaction tower, and the furnace charge nozzle is formed in the top of the reaction tower; the molten pool is arranged at the lower part of the reaction tower, and a towerbody of the reaction tower is of a single-sheet hyperboloid structure generated through a hyperbolic curve rotating around a main axis of the reaction tower; and the lower part of the single-sheet hyperboloid structure is provided with an inlet of fuel and oxygen-enriched gas, the fuel and the oxygen-enriched gas enter the lower part of the reaction space from the inlet, and high-valence iron oxides in iron ore are partially reduced to low-valence iron oxides and a part of metal iron, and the low-valence iron oxides and the part of metal iron fall into the molten pool. The iron smelting furnace has the advantages of compact structure and controllable reaction time and reaction temperature.

The invention discloses a bench-work pin puller. The bench-work pin puller comprises a pull rod, a sleeve rod and a pull head, the sleeve rod is connected on the pull rod in a sleeving mode, the pullhead is installed at the end of the pull rod, wherein the pull rod sequentially comprises a connecting end used for being connected with the pull head, a straight rod used for being connected with thesleeve rod in a sleeved mode and a convex handle used for impacting with the sleeve rod for pin pulling from bottom to top, the diameter of the convex handle is larger than that of the straight rod,the sleeve rod is of a one-sheeted hyperboloid structure, a through hole used for being connected on the pull rod in a sleeving mode is formed in the central axis of the sleeve rod, the diameter of the through hole is larger than that of the straight rod, and a connecting position which is connected with the connecting end is arranged at one end of the pull head, and the other end of the pull headis provided with a thread used for being connected with a pin piece.